Do not visit attributes in ItemLowerer.
#91111
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Hi, I run a fuzzer on this branch to make sure that it fixes all the crashes that I found, and it does fix them so that's nice. But I also found a new input that does crash on this branch: #![a={impl std::ops::Neg for i8 {}}]That doesn't ICE on latest nightly 2021-11-20, but it does ICE on stable 1.56.1. I guess it's the same issue, but if not then let me know and I will open a new one. Backtrace
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By default, AST visitors visit expressions that appear in key-value attributes. Those expressions should not be lowered to HIR, as they do not correspond to actually compiled code. Since an attribute cannot produce meaningful HIR, just skip them altogether.
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@Badel2 this should fix your second example. |
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📌 Commit 7f5d3ff has been approved by |
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Nov 25, 2021
…askrgr Rollup of 6 pull requests Successful merges: - rust-lang#89359 (Various fixes for const_trait_impl) - rust-lang#90499 (Link with default MACOSX_DEPLOYMENT_TARGET if not otherwise specified.) - rust-lang#91096 (Print associated types on opaque `impl Trait` types) - rust-lang#91111 (Do not visit attributes in `ItemLowerer`.) - rust-lang#91162 (explain why CTFE/Miri perform truncation on shift offset) - rust-lang#91185 (Remove `-Z force-overflow-checks`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Yes, this fixes all the examples I found. Thank you! |
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By default, AST visitors visit expressions that appear in key-value attributes.
Those expressions should not be lowered to HIR, as they do not correspond to actually compiled code.
Since an attribute cannot produce meaningful HIR, just skip them altogether.
Fixes #81886
Fixes #90873
r? @michaelwoerister